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Add Two Two-Digit Numbers (1)

In this worksheet, stuents add two-digit numbers by adding the units, then adding the tens and combining the results.

'Add Two Two-Digit Numbers (1)' worksheet

Key stage:  KS 2

Curriculum topic:   Number: Addition and Subtraction

Curriculum subtopic:   Use Written Addition/Subtraction to Three Digits

Difficulty level:  

Worksheet Overview

QUESTION 1 of 10

In this worksheet you have to add together two two-digit numbers.

 

Example

Add the numbers:

28 + 57

 

Answer

First we add the units 8 + 7 = 15

Then we add the tens, 20 + 50 = 70

Then we combine the two results to get 15 70 = 85

The answer is 85

Add the numbers:

 

31 + 45

Add the numbers:

 

31 + 31

Add the numbers:

 

31 + 77

Add the numbers:

 

21 + 36

Add the numbers:

 

31 + 29

Add the numbers:

 

47 + 45

Add the numbers:

 

38 + 15

Add the numbers:

 

28 + 45

Add the numbers:

 

35 + 45

Add the numbers:

 

37 + 75

  • Question 1

Add the numbers:

 

31 + 45

CORRECT ANSWER
76
EDDIE SAYS
Add the units to get: 1 + 5 = 6
Then add the tens to get: 30 + 40 = 70
Then combine the two results to get: 70 = 76
  • Question 2

Add the numbers:

 

31 + 31

CORRECT ANSWER
62
EDDIE SAYS
Add the units to get: 1 + 1 = 2
Then add the tens to get: 30 + 30 = 60
Then combine the two results to get: 2 + 60 = 62
  • Question 3

Add the numbers:

 

31 + 77

CORRECT ANSWER
108
EDDIE SAYS
Add the units to get: 1 + 7 = 8
Then add the tens to get: 30 + 70 = 100
Then combine the two results to get: 8 + 100 = 108
  • Question 4

Add the numbers:

 

21 + 36

CORRECT ANSWER
57
EDDIE SAYS
Add the units to get: 1 + 6 = 7
Then add the tens to get: 20 + 30 = 50
Then combine the two results to get: 7 + 50 = 57
  • Question 5

Add the numbers:

 

31 + 29

CORRECT ANSWER
60
EDDIE SAYS
Add the units to get: 1 + 9 = 10
Then add the tens to get: 30 + 20 = 50
Then combine the two results to get: 10 + 50 = 60
  • Question 6

Add the numbers:

 

47 + 45

CORRECT ANSWER
92
EDDIE SAYS
Add the units to get: 7 + 5 = 12
Then add the tens to get: 40 + 40 = 80
Then combine the two results to get: 12 + 80 = 92
  • Question 7

Add the numbers:

 

38 + 15

CORRECT ANSWER
53
EDDIE SAYS
Add the units to get: 8 + 5 = 13
Then add the tens to get: 30 + 10 = 40
Then combine the two results to get: 13 + 40 = 53
  • Question 8

Add the numbers:

 

28 + 45

CORRECT ANSWER
73
EDDIE SAYS
Add the units to get: 8 + 5 = 13
Then add the tens to get: 20 + 40 = 60
Then combine the two results to get: 13 + 60 = 73
  • Question 9

Add the numbers:

 

35 + 45

CORRECT ANSWER
80
EDDIE SAYS
Add the units to get: 5 + 5 = 10
Then add the tens to get: 30 + 40 = 70
Then combine the two results to get: 10 + 70 = 80
  • Question 10

Add the numbers:

 

37 + 75

CORRECT ANSWER
112
EDDIE SAYS
Add the units to get: 7 + 5 = 12
Then add the tens to get: 30 + 70 = 100
Then combine the two results to get: 12 + 100 = 112
---- OR ----

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